First (only) visit: April 2005
Visited: La Paz, Santa Cruz.
Bolivia just missed a Top 100 spot and isn't bad at all. I especially found Santa Cruz interesting in that there is more culture here than expected from a place in the middle of the lowlands in the centre of the continent. La Paz is large and full of contrasts, and with a stunning location. People here really friendly towards foreigners, or at least towards me.
Highlight: Seeing La Paz from above, a drop from 4,400 to 3,200 meters; a unique city.